Class Code 5610
Contractors – All Construction Subcontracted
Class Code 5610 covers contractors whose construction work is subcontracted out rather than performed by in‑house craft labor. The September 1, 2026 approved pure premium rate is $3.624 per $100 of payroll. Understanding this classification helps California contractors correctly report payroll, manage exposures, and control workers' compensation costs.
What Class Code 5610 Covers
This classification applies to businesses that act as prime contractors, construction managers, or specialty contractors who subcontract all physical construction work to other licensed trades. Typical operations include project bidding and contract administration, site coordination, inspection and supervision of subcontractor performance, permitting, and quality control rather than hands‑on trade work. Payroll reported to this code should reflect employees engaged in supervision, field inspection, project management, estimating, clerical support tied to specific construction projects, and other non‑trade duties. It does not cover employees performing significant manual trade work (carpentry, plumbing, electrical, excavation), who should be reported to the appropriate trade class codes. Accurate classification depends on the employer's actual day‑to‑day operations and how much, if any, hands‑on work the employer's employees perform on job sites.
Who It Applies To
- General contractors who subcontract all specialty trade work and keep only supervisors, inspectors, and office staff
- Construction managers and developer contractors who coordinate and oversee subcontractors
- Prime contractors on public or private projects that hire all trade work to subcontractors
- Project superintendents, field inspectors, and site coordinators employed by a contractor
- Estimators, contract administrators, and clerical staff whose payroll is tied to construction projects
Common Job Duties
- Contract bid preparation, subcontractor procurement and contract administration
- On‑site supervision and coordination of subcontractors and deliveries
- Quality control inspections, punch‑list management, and permit coordination
- Scheduling trades, sequencing work, and resolving site logistics
- Project estimating, change order negotiation, and client communications
- Maintaining jobsite records, safety documentation, and contractor invoices
Common Injury Risks
Understanding the $3.624 Rate
The pure premium rate of $3.624 per $100 of payroll represents the expected cost of claims (medical + indemnity) for workers in this classification. To calculate the pure premium, multiply payroll by the rate and divide by 100 (for example, $100,000 payroll x 3.624 / 100 = $3,624 expected loss). Insurers then add expense loads, profit margins, policy fees, experience modification (EMR), and state assessments — so the employer's final premium will likely be higher and varies by claims history, payroll mix, audit results, and specific underwriting adjustments.
Cal/OSHA Compliance Requirements
Cal/OSHA requirements applicable to contractors who subcontract work include maintaining a written Injury and Illness Prevention Program (IIPP), implementing site hazard communication, and complying with Cal/OSHA construction standards for fall protection, scaffolding, excavation, and PPE when supervisors or employer employees enter active work zones. Even when work is subcontracted, prime contractors and construction managers have a duty to coordinate safety on site, verify subcontractor compliance, and ensure competent persons are designated for specific hazards. Employers must also follow California's Heat Illness Prevention regulations, keep injury logs and timely report serious injuries to Cal/OSHA.
How Key HR Helps Employers Under Class Code 5610
A PEO like Key HR can centralize payroll and workers' comp administration, ensure employees are correctly classified to Code 5610 when appropriate, and provide construction‑specific loss control services to reduce claims. Key HR offers claims management, return‑to‑work programs, Cal/OSHA training (e.g., Heat Illness Prevention, competent person recognition), subcontractor prequalification assistance, and safety program development to help lower experience modifications and total premium over time.
Get a QuoteFrequently Asked Questions
How do I know if my company qualifies for Class Code 5610?
Code 5610 is appropriate when your business contracts for construction work and genuinely subcontracts all hands‑on trade work to others, while your employees perform supervision, inspection, project management, estimating, or clerical tasks on construction projects. If your workers perform substantial manual trade work (framing, electrical, plumbing, excavation), those payrolls should be reported to the specific trade class codes instead.
If I subcontract all work, am I still responsible for jobsite safety?
Yes. Even when subcontracting, prime contractors and construction managers retain responsibilities under Cal/OSHA to coordinate site safety, verify subcontractor compliance, designate competent persons for hazards, and ensure hazard communication and site controls are in place. Failure to oversee safety can increase liability and workers' comp exposure.
What practical steps reduce workers' comp costs for this classification?
Document and separate payroll for supervisory/administrative staff versus trade labor, implement a written IIPP and site safety checklists, prequalify subcontractors, run proactive return‑to‑work and light‑duty programs, invest in supervisor safety training (including heat illness prevention), and partner with a PEO or broker to ensure accurate classing and rigorous claims management to lower your EMR and premium.
Quick Facts
- Class Code
- 5610
- Classification
- Contractors – All Construction Subcontracted
- Pure Premium Rate
- $3.624 / $100 payroll
- Effective Date
- September 1, 2026
- Source
- WCIRB Approved Filing
Manage Workers' Comp Through a PEO
Key HR provides pay-as-you-go workers' comp for California employers — no large deposits, no audits, better rates.
Get a Quoteor call (800) 922-4133Ready to Simplify Workers' Comp for Class Code 5610?
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